Advertisements
Advertisements
प्रश्न
A photoelectric surface is illuminated successively by monochromatic light of wavelength λ and `λ/2`. If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times that in the first case, the work function of the material is
पर्याय
`"hc"/λ`
`(2"hc")/λ`
`"hc"/(3λ)`
`"hc"/(2λ)`
Advertisements
उत्तर
`"hc"/(2λ)`
APPEARS IN
संबंधित प्रश्न
Two radiations with photon energies 0.9 eV and 3.3 eV respectively are falling on a metallic surface successively. If the work function of the metal is 0.6 eV, then the ratio of maximum speeds of emitted electrons in the two cases will be
Give the definition of intensity of light according to quantum concept and its unit.
Mention the different types of photocells.
Define stopping potential.
List out the laws of photoelectric effect.
Explain the quantum concept of light.
List out the characteristics of photons.
Calculate the maximum kinetic energy and maximum velocity of the photoelectrons emitted when the stopping potential is 81 V for the photoelectric emission experiment.
How many photons of frequency 1014 Hz will make up 19.86 J of energy?
A 3310 Å photon liberates an electron from a material with energy 3 × 10−19 J while another 5000 Å photon ejects an electron with energy 0.972 × 10−19 J from the same material. Determine the value of Planck’s constant and the threshold wavelength of the material.
